Development and internal validation of prediction models for persistence of self-reported orofacial pain in the follow-up of patients with myofascial pain

Summary

OBJECTIVES: To identify predictors in patient profiles, and to develop, internally validate, and calibrate prediction models for the persistence of self-reported orofacial pain at the 6-month and 12-month follow-up in patients with myofascial pain. MATERIALS AND METHODS: A cohort of 63 adult patients with moderate to severe chronic myofascial pain was included. Patient and disease characteristics at baseline were recorded as potential predictors. Patients` presence or absence of improvement of orofacial pain at follow-up was considered the outcome. Binary logistic regression analyses were used to develop the models. The performance and clinical values of the models were determined. RESULTS: Forty-three percent and 30% of the patients had persistence of orofacial pain at 6-month and 12-mont